std::basic_fstream::is_open

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C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Input/output library
basic_streambuf basic_filebuf basic_stringbuf ios_base basic_ios basic_istream basic_ostream basic_iostream basic_ifstream basic_ofstream basic_fstream basic_istringstream basic_ostringstream basic_stringstream I/O manipulators C-style I/O
std::basic_fstream
Member functions basic_fstream::basic_fstream basic_fstream::operator= basic_fstream::swap basic_fstream::rdbuf File operations basic_fstream::is_open basic_fstream::open basic_fstream::close

bool is_open() const;

Checks if the file stream has an associated file.

Effectively calls rdbuf()->is_open().

Contents 1 Parameters 2 Return value 3 Example 4 See also

[edit] Parameters

(none)

[edit] Return value

true if the file stream has an associated file, false otherwise

[edit] Example

This section is incomplete

[edit] See also

open	opens a file and associates it with the stream (public member function)
close	closes the associated file (public member function)